Home / 1,186,206.54-1,636,962.04-642,342.36

Finding the Fourth Proportional to 1,186,206.54, 1,636,962.04 and 642,342.36

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Solution

The fourth proportional to 1,186,206.54, 1,636,962.04 and 642,342.36 is: 886,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,206.54 : 1,636,962.04 = 642,342.36 : x
  2. Step 2: Convert to fraction form
    1,186,206.54/1,636,962.04 = 642,342.36/x
  3. Step 3: Cross multiply
    1,186,206.54x = 1,636,962.04 × 642,342.36
  4. Step 4: Simplify right side
    1,186,206.54x = 1,051,490,060,004.01
  5. Step 5: Solve for x
    x = 1,051,490,060,004.01/1,186,206.54
  6. Step 6: Final answer
    x = 886,430.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.